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Q. No.Consider the two statements:
Statement I:
An undifferentiated layer, mesoglea, is present in between the ectoderm and the mesoderm in diploblastic organisms.
Statement II:
A third germinal layer, endoderm, in between the ectoderm and mesoderm, is present in triploblastic animals.
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Basis of Classification |
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Annelids, Arthropods, Molluscs, Echinoderms and Chordates are all:
I: eucoelomates [having true coelom].
II: animals having organ system level of organisation.
I: eucoelomates [having true coelom].
II: animals having organ system level of organisation.
| 1. | Only I is correct | 2. | Only II is correct |
| 3. | Both I and II are correct | 4. | Both I and II are incorrect |
Subtopic: Basis of Classification:I |
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Level 1: 80%+
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Identify the option where all the given animals belong to same phylum:
| 1. | Asterias, Echinus, Antedon, and Ophiura |
| 2. | Balanoglossus, Saccoglossus and Amphioxus |
| 3. | Pinctada, Aplysia, Dentalium, and Obelia |
| 4. | Laccifer, Bombyx, Trypanosoma and Periplaneta |
Subtopic: Phylum Echinodermata |
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Level 1: 80%+
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Corals:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | are Cnidarians. |
| II: | have a skeleton composed of silica spicules and calcium chloride. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Phylum Coelenterata |
72%
Level 2: 60%+
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The organism in the given figure shows pentaradial symmetry [5 body parts]. What else must be present in this organism?
| 1. | A rasping tongue like organ in alimentary canal |
| 2. | Finger like osmoregulatory and excretory structures at the junction of midgut and hindgut |
| 3. | A water vascular system with tube feet |
| 4. | A large number of cilia used for locomotion |
Subtopic: Phylum Echinodermata |
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Level 1: 80%+
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How many of the given statements regarding birds are correct?
| I: | They have feathers and most of them can fly. |
| II: | They possess beak. |
| III: | They have scales on the forelimbs and hindlimbs are modified into wings. |
| IV: | They have dry skin without glands except the oil gland at the base of the tail. |
| V: | They possess a fully ossified (bony) endoskeleton. |
| VI: | They have long bones that are solid without air cavities (pneumatic). |
| 1. | 3 | 2. | 4 |
| 3. | 5 | 4. | 6 |
Subtopic: Study of Aves & Mammals |
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Level 2: 60%+
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In amphibians:
| I: | Alimentary canal and reproductive tracts open into a common chamber called cloaca which opens to the exterior but the urinary system has a separate opening to the exterior. |
| II: | Respiration is by gills, lungs and through skin. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Study of Amphibians |
76%
Level 2: 60%+
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Identify the correct statement regarding classification of chordates:
| 1. | Vertebrata is a subphylum; Agnatha is a division and Pisces is a super-class |
| 2. | Vertebrata is a supraphylum; Agnatha is a phylum and Pisces is a super-class |
| 3. | Vertebrata is a subphylum; Agnatha is a division and Pisces is a class |
| 4. | Vertebrata is a subphylum; Agnatha is a super-class and Pisces is a class |
Subtopic: Phylum Chordata |
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Statocysts, present in some animals, help directly in:
1. Locomotion
2. Respiration
3. Feeding
4. Balancing
1. Locomotion
2. Respiration
3. Feeding
4. Balancing
Subtopic: Phylum Arthropoda |
89%
Level 1: 80%+
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Neural system consists of paired ganglia connected by lateral nerves to a double ventral nerve cord in:
1. Hydra
2. Cephalochordates
3. Amphibians
4. Annelids
1. Hydra
2. Cephalochordates
3. Amphibians
4. Annelids
Subtopic: Phylum Annelida |
76%
Level 2: 60%+
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